Norsk versjon | |||||
THE ORE DATABASE | |||||
Occurence 1833 - 001 Breifonn | |||||
(Object Id: 2136) (Last updated: 05.09.2018) |
Belongs to the Province: Mofjellet sink-bly |
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Location |
County: | Nordland | Municipality: | Rana (1833) |
Map 1:50000: | Storforshei (2027-4) | Map 1:250000: | Mo i Rana |
Coordinate system: | EU89-UTM Zone 33 |
East: | 465646 m. | North: | 7353316 m. |
Longitude: | 14.2341230 | Latitude: | 66.2978190 |
Show on map |
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Resource |
Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Zinc | |
Element(s): | Zn Cu Pb |
Importance |
Raw material meaning: | Not Assessed (reg. 18.02.2015) |
Resources and production |
Activity: | Pitting | Reserves: | ||
Operating method: | Historical production: | ,04 thousand tons |
Products |
Element/product | Crude ore grade or quality | Reg. date | |
Cu | 1.4 % | 12.03.1992 | |
Pb | 1 % | 12.03.1992 | |
Zn | 5.6 % | 12.03.1992 |
Operations |
From - To | Activity | Comments | |
1915 - 1916 | Pitting | ||
1975 - 1976 | Geophysics | ||
1980 - 1980 | Core drilling | ||
1983 - 1984 | Geophysics | ||
1986 - 1986 | Geophysics |
Mineralization |
Era: | Proterozoic | Period: | Neoproterozoic | |
Genesis: | Sedex | Form: | Lens | |
Main texture: | Durchbewegt | Min. distribution: | Massive (>50 % ore minerals) |
Main grain size: | Medium grained (1-3 mm) | Main alteration: |
Strike/Dip: | 260 / 30 | Direction: | 270 | |
Plunge: | 5 |
Stratigraphic classification of host rock |
Era: | Proterozoic | Period: | Neoproterozoic |
Province: | Caledonides | |
Geotec.unit: | Rødingsfjell Nappe Complex | |
Tectonic complex: | Øverste allokton | |
Igneous complex: |
Group: | Mofjellgruppen | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
Gangue mineral | Plagioclase | Subordinate mineral (1-10%) | |
Gangue mineral | Potassic feldspar | Subordinate mineral (1-10%) | |
Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
Ore mineral | Sphalerite | Major mineral (>10%) | |
Ore mineral | Pyrrhotite | Major mineral (>10%) | |
Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
Ore mineral | Galena | Subordinate mineral (1-10%) | |
Ore mineral | Marcasite | Accessory mineral (<1%) | |
Ore mineral | Rutile | Accessory mineral (<1%) | |
Ore mineral | Molybdenite | Accessory mineral (<1%) | |
Ore mineral | Tetrahedrite | Accessory mineral (<1%) | |
Ore mineral | Magnetite | Accessory mineral (<1%) | |
Ore mineral | Arsenopyrite | Accessory mineral (<1%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Muskovittgneis | Extrusive Original rock :Tuff |
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Metamorphic facies :Amphibolite |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Host rock | Foliation | Strike/Dip :260 / 30 | Post-mineralisation ;...Effect :None | |
Host rock | Mineral lineation | Strike/Dip :270 / 5 | Post-mineralisation ;...Effect :Controls | |
Host rock | Fold axis | Strike/Dip :270 / 5 | Post-mineralisation ;...Effect :Controls |
Information(s) in free text format |
Free text |
I 1915-16 ble det drevet en 2 m dyp 20x4 m dagstrosse og uttatt 40 tonn malm, hvorav 5 tonn inneholdende 17 % Cu ble utskeidet. Mineraliseringen ligger i samme sone som Sølvberg Grube, og det er målt geofysikk både fra helikopter og med flere metoder på bakken, samt diamantboring (4 hull i 1978 og 1980). Boringene viste bare noen 5 cm tynne, massive malmstriper med magnetkis, sinkblende, kobberkis og blyglans, mens utgående viser 0.25 m mektig (0.10-0.70 m) massivmalm (prøve 02-05). Kruse (1981) konkluderer med at det dreier seg om en smal malmblyant med liten mektighet. Malmmineraler er magnetkis, kobberkis, sinkblende, blyglans, valleriitt, molybdenglans, arsenkis, tetrahedritt, rutil, magnetitt, breithauptitt, cubanitt og markasitt. Hengbergart er granatglimmergneis, med litt epidot og hornblende. Liggbergart er lys muskovittgneis (01). Dagstrossen (hovedskjerpet) er vannfylt, og mineraliseringen (04 og 05) sees ikke i fastfjell, men mektigheten oppgis som nevnt til 0.10-0.70 m. 35 m vest for vestenden av dagstrossen er det skjerpet (2x2 m, 4 m3 tipp) uten å treffe mineralisering. |
Bibliography: |
References not to be found in NGU's Reference Archive.: |
Kruse, A. 1965: Oversikt over malmfelt og malmletingsarbeider i Ranen. Rapport Bergverksselskapet Nord-Norge. |
Endresen, B.A. 1972: Sulfidlokaliteter i Rana - kort oversikt med forsøk på kvalitativ kartlegging. Upubl. rapport. |
Saager, R. 1966: Erzgeologische Untersuchungen an Kaledonischen Blei, Zink und Kupfer fürenden Kieslagerstätten im Nord-Rana - Distrikt, Nord-Norwegwn. Doktoravhandling ETH, Zürich. |
Kruse, A. 1981: Diamantboring Breifonn-skjerpene, Rana, Nordland 1980. Intern rapport nr. 8106. Bergverksselskapet Nord-Norge A/S. |
Kruse, A. 1984: Undersøkelse av Sølvberg-grubesonen, Mo i Rana, Nordland. Joint venture Project mellom A/S Sydvaranger/Prospektering A/S og LKAB/Svenska Petroleum AB. Int. rapp. nr. 8402. Prospektering A/S. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
BREI-01 | Dump |
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BREI-02 | Dump |
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BREI-03 | Dump |
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NO0010.04 | Bedrock |
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NO0010.05 | Bedrock |
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NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Skjerp 1 |
(Object Id: 2968 1,01,00) |
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Location |
County: | Nordland | Municipality: | Rana (1833) |
Map 1:50000: | Storforshei (2027-4) | Map 1:250000: | Mo i Rana |
Coordinate system: | EU89-UTM Zone 33 |
East: | 465322 m. | North: | 7353297 m. |
Longitude: | 14.2269240 | Latitude: | 66.2976120 |
Show on map |
|
Resource |
Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Zinc | |
Element(s): | Zn Cu Pb |
Resources and production |
Activity: | Pitting | Reserves: | ||
Operating method: | Historical production: |
Information(s) in free text format |
Free text |
Her er det sprengt ut 40 m3 i en skrent. Massiv-malmen (02 og 03) opptrer i boudinerte linser, opptil 25 cm mektige, som ligger stjert om stjert, med noen uregelmessige anrikninger i muskovittgneisen utenom. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
BREI-04 | Dump |
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BREI-05 | Dump |
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NO0010.01 | Bedrock |
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NO0010.02 | Bedrock |
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NO0010.03 | Bedrock |
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NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 1833 - 001 Breifonn |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | Ag* | Au# |
BREI-01 | Dump | 46200 | 63600 | 16350 | 4 | 33 | 30.0 | 100.0 |
BREI-02 | Dump | 14150 | 27200 | 138 | 5 | -5 | 3.0 | 10.0 |
BREI-03 | Dump | 3030 | 52300 | 3070 | 7 | -5 | 6.0 | -10.0 |
BREI-04 | Dump | 6810 | 71600 | 9060 | 6 | 16 | 15.0 | 10.0 |
BREI-05 | Dump | 41100 | 64300 | 9930 | 3 | 12 | 12.0 | 10.0 |
NO0010.01 | Bedrock | 9 | 237 | 94 | 2 | 4 | 1.2 | 2.0 |
NO0010.02 | Bedrock | 11232 | 96736 | 4328 | 20 | 77 | 9.3 | 8.0 |
NO0010.03 | Bedrock | 3695 | 62525 | 16839 | 24 | 94 | 25.7 | 7.0 |
NO0010.04 | Bedrock | 8221 | 99999 | 386 | 22 | 61 | 3.5 | 5.0 |
NO0010.05 | Bedrock | 32969 | 99999 | 21619 | 24 | 63 | 51.8 | 9.0 |
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Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
BREI-01 | 52 | 1025 | 25.00 | 34 | 16 | 93 | |||
BREI-02 | 11 | 110 | 20.00 | 1 | 14 | 138 | |||
BREI-03 | 17 | 67 | 24.00 | -1 | -5 | 26 | |||
BREI-04 | -5 | 79 | 30.00 | 1 | 5 | 54 | |||
BREI-05 | -5 | 490 | 41.00 | 14 | 8 | 18 | |||
NO0010.01 | 1.0 | 1.0 | 4 | .9 | 32 | 3.00 | 2 | 2 | |
NO0010.02 | 2.0 | 2.0 | 2 | 507.8 | 12 | 3.00 | 2 | 57 | |
NO0010.03 | 1.0 | 6.0 | 4 | 328.3 | 9 | 5.00 | 13 | 72 | |
NO0010.04 | 1.0 | 3.0 | 2 | 672.3 | 10 | 3.00 | 2 | 42 | |
NO0010.05 | 1.0 | 3.0 | 2 | 657.3 | 10 | 5.00 | 16 | 40 |
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Sample No. | Ga* | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* |
BREI-01 | 29.00 | 11.85 | |||||||
BREI-02 | 5.00 | 50.00 | |||||||
BREI-03 | 5.00 | 47.30 | |||||||
BREI-04 | 8.00 | 39.10 | |||||||
BREI-05 | 14.00 | 26.40 | |||||||
NO0010.01 | .49 | 1 | 3 | 24 | .62 | 2.00 | 5.00 | 1 | |
NO0010.02 | 28.86 | 8 | 1 | 1706 | 27.57 | 2.00 | 5.00 | 4 | |
NO0010.03 | 27.88 | 10 | 2 | 1133 | 30.64 | 2.00 | 5.00 | 2 | |
NO0010.04 | 31.19 | 1 | 1 | 1676 | 27.98 | 2.00 | 5.00 | 1 | |
NO0010.05 | 29.81 | 2 | 1 | 1509 | 29.18 | 1.00 | 5.00 | 1 |
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Sample No. | Sr* | La* | B* | ||||||
BREI-01 | |||||||||
BREI-02 | |||||||||
BREI-03 | |||||||||
BREI-04 | |||||||||
BREI-05 | |||||||||
NO0010.01 | 2.0 | 3.00 | 2 | ||||||
NO0010.02 | 3.0 | 2.00 | 2 | ||||||
NO0010.03 | 2.0 | 2.00 | 2 | ||||||
NO0010.04 | 1.0 | 2.00 | 2 | ||||||
NO0010.05 | 1.0 | 3.00 | 2 |
The fact sheet was created on 02.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
Copyright © 2024 Geological Survey of Norway |